Concrete-mixing apparatus



A. W. RANSOME.

CONCRETE MIXING APPARATUS.

APPLICATION FILED MAY 27. 1914.

Patented Au 17,1920.

2 sugars-sum l.

Inventor:

(D k A tty A. W. RANSOME.

CONCRETE MIXING APPARATUS.

I APPLICATION FILED MAY 27, 19M. 1,350,179.

Patented Aug 17, 1920 2 SHEETS-SHEET! 2 QAIKS? lnventor: v

UNITED STATES PATENT, OFFICE.

ARTHUR W. RANSOME, F PLAIN FIELD, NEW JERSEY, ASSIGN'OR TO RANSOME CONCRETE MACHINERY COMPANY, OF DUNELLEN, NEW JERSEY, A CORPO- RATIOIN or NEW JERSEY.

CONCRETE-MIXING APPARATUS.

Specification of Letters latent. Patented Aug, 17, 1920.

Application filed May 27, 1914. Serial-No. 841,185.

To all whom it may concern: Be it known that I, ARTHUR WILFR ID RANsoME, a citizen-of the United States, and a resident of the city of Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Concrete-Mixing Apparatus, of which the following is a specification.

difficulty and without the use of skilled labor or shop appliances, and disassembled or knocked down for shipment to another point with equal facility. To these ends the improvements involve the construction of the apparatus in dismemberable parts made in such form and size as to be nested or placed together when disconnected 1n such a manner as to form a compact assemblage which may be inclosed within a relatively small crate or box'for shipment.

Concrete construction work is now carrled on in practically'every section of the globe, and frequently such work is done in places that are diflicult to reach and which have very poor if any provision for the transportation of freight thereto. In such cases the reduction-of the bulk ofmachinery to be transported is of great importance. Even where the work is done in places that have good transportation facilities, the use of concrete mixing machinery is generally temporary, and the machinery is shipped to theplace where the work is to be' done and then reshipped to some other polnt after a short use. A more important consideration, however, is the cost of shipping machinery of this character assembled from the manufacturer to the purchaser. Frelght rates are based largely on cubical displacement, and a hollow drum, such as that of the ordinary concrete mixer {has an extremely large cubical area in proportion to its weight. By so ,eqnfitructing the appara;

tus therefore that it may be packed and shipped knocked down in compact form and easily assembled at its destination, a very material saving in freight and the cost of handling is effected.

As the advantages above set forth are sufficient to emphasize theimportance of the improvements the other advantages need not be discussed.

The improvements are illustrated in the accompanying drawings, in which Figure 1" is a diagrammatic view of the parts of a concrete mixing apparatus embodying the improvements, nested or housed for shipment and before being assembled. Fig. 2 is a side elevation of the apparatus assembled. Fig. 3 is a vertical cross section- -of the drum and adjacent parts taken sub stantially on the line 3-3 ofFig. 2 and looking in the direction indicated by the arrows. Fig. 4 is an enlarged detail partly in cross section of one of the connections between the drum, headv semi-cylindrical sheets and traction rings of the mixer. Fig. 5 is an enlarged detail of the splice plates and other parts vat the joint of the semicylindrical drum sheets.

The drum proper consists of two semicylindrical nesting sections A of identical form and size and two heads B and B, the former having an. opening with an oblique annular flange l3 surrounding it, and the latter with a lar or opening having a similar flange B hen the two heads are placed together face to face the flanges overlap. The head 13 may be placed upon the head B with its inner face in contact with the outer face of the latter. In either case the heads fit together so that they ocoupy' a reduced space'and form with the nesting section A, an inclosedspace. The trackrings C serve a double purpose, viz: That of annular tracks supporting the drum on the flanged rollers D and that of a reinforcement and cover for the joints between the side edges of the semi-c linthe head and, the trackt also pressed internal diameter of the annular track is,

' slightly less than the internal diameter of the drum composed of the sections A, and

a slight inward projection of the portion C is thus provided in order to insure a good hold. The tie bolts F are provided with screw-nuts at their ends by which they are removably secured in position and by which the parts between the said nuts are compressed and held in position.

In order to make the joints of the semi cylindrical drum sections A tight and to strengthen and reinforce them splice plates G are provided. These 'plates overlap the edges at the joint on the outside and are secured one of them to one sectionand the other to the other section by means of rivets G, while the opposite side in each case is secured to the other section near its abutting edge by means of screw bolts G By this provision it is necessary to disconnect one edge only of each splice plate G when the machine is dismembered, and to connect one edge only when the parts are assembled. The charging hopper H may be mounted in' any suitable manner on the outside of the drum, so as to maintain it in its proper position, so that materials may be convenientl dumped'therein from the charging plat ormI and conve ed thereby to the interior of the drum. This hopper is in substantially the form of a truncated hollow half cone, with the smaller end within-the gun e B of the opening in the charging ea able relationship to the. platform I (or other loadlng structure) so that the materials may be conveniently deposited therein. I The discharge chute J is mounted at the discharge end of the drum on the frame or support K, so that it inay be swung into and of the drum and the larger end in suitcured to the heads B and B by means of suitable bolts L passing through their flanged ends and through the said heads. They may besecured also at other points if desired. These blades are of substantially uniform construction, and fit one within the other so that they may be nested when the mixer is knocked down.

'The rollers D are keyed to shafts D and these shafts are journaled in suitable bearings in the supports M, the recess M in each support receives the shaft D, and permits it to beremoved therefrom when the weight of the drum is not on it. The drum, however, will hold the shafts in the recesses when the parts are assembled and in position for operation.

The frames W space the timbers U and hold them in position, andthe supports M are mounted thereon.- The supports K which swing in and out to bring the chute J to its two positions are also mounted onan e x tension W. In this manner the entire device, is securely assembled, and the parts held in their proper positions.

"The rollers receive the traction rings 0,

and are provided with flanges D to prevent lateral movement. The belt N passes over thepulleys V ke ed on the shafts D and under the drum tween the two said pulleys, and imparts .motion to the pulleys and the drum by frictional contact, This beltmay be composed of chain or of other suitablematerial.

, 0 represents the drive pulley of an. elec-.

'tric motor or other source of poweryand P the pulleyIby which power is transmitted to the belt .it and the reduced pulley S, over which'the said beltpasses, are keyed. Power is transmitted from the pulley R to the pulley S by the belt T.

The diagram of Fig. 1 shows the two heads placed horizontally with the frame through the shaft R to which and rollers resting thereon, the Wings nested and placed so as to rest thereon, with bolts and other small parts placed between,

out of the said 'opening' It receives the the charging and discharge chutes placed I mixed concrete from the. blades L which carrythe same to. the top of thedrum as the drum rotates and then-dump them down in the zone occupied by the discharge chute J when in its inner position. -When the drum is not in this position the materials fall with a rearward movement, and strikin the blades below are deflected still farther back ward, so that the materials are given a back{ ward and forward movement during the mixing period.

the charging and and J is'such as to en.

The conformation of. discharge chutesH I ablejthem 'tofbe storedradily within the inclosed s ace.- The mixing bladesL are detachably sea timbers or sleepers U, as shown in Fig. 1, are placed'beneath the heads of the drum, 1

but they may be disposed of in any" desired manner. It is obvious also that in order to reduce their length they maybe made in sections, with or without means for folding or telescoping, packed with the other parts in the space inclosed by inder.

The details of construction above deand-thus be capable of being the sectionand ends of the cylv as scribed may (if course be varied within certain limits without departing from the scope of the invention, and the other accessories may be added to the mixer proper.

What I claim is:

1. In a knock-down concrete mixer, in combination, a drum having sides longitudinally partible into nesting segments, nesting ends for said drum, the ends adapted to form the bottom and the sides the roof of an inclosed space, removable nesting mixing blades, adapted to be stored within the inclosed space indicated, and charging and discharge chutes, shaped to conform to the space so inclosed. Y

2. In a knock-down concrete mixer, a cylindrical drum separable longitudinally into a pair of nesting side sections, and a pail of ends, the side sections being each provided with a splice plate, the ends being provided with outwardly circular extendlng flanges of unequal diameter, whereby said ends may be nested, the nested sides and ends, forming the roof and bottom of an inclosed space, removable mixing blades, removable supply and delivery chutes, sleepers, and removable drum supporting rollers on said sleepers, adapted to be stored withinsaid inclosed space.

3. In a knock-down mixing drum, in combination; a pair of nesting longitudinally partible sides and nesting ends adapted to cooperate with the sides to form the roof and and bottom of an inclosed space, nesting detachable mixing blades, and chutes adapted to the inclosed space, the inclosed space being adapted to receive the drum' supporting pulleys, and other parts of the structure.

4:. In combination, a knock-down mixing drum, rollers, sleepers and frames constituting means for supporting said drum, a

chain motor, and pulley constituting means for driving said drum and chutes for supplying and discharging material, the drum being longitudinally separable, the separated parts of the drum adapted to inclose a space in which may be stored said supporting and said driving means, and said chutes. v v

5. In combination, a knock-down mixing drum, means for supporting said drum on which means it may turn, and means for imparting turning motion to said drum, the drum being separable into sections adapted to inclose with the ends, a space in which space said supporting 'and driving means may be stored.

6. In combination, a knock-down mixing drum, means for supporting said drum on which means it may turn, means for imparting turning motion to said drum, and chutes whereby material may be supplied toand removed from. the drum, the

' gether,

being separable into sections ada ted to inclose with the ends, a space in w ich space said supporting and driving means and said chutes may be stored.'

7. In a knock-down concrete mixer in combination, a drum consisting of an ex terior part and ends adapted to said part, the exterior part being separable into nest-- knock-down structure. adapted for easy shipment is produced.

and nesting mixing bla es, all

8. A concrete mlxer conslsting of a cylindrical casing or drum formed of a plu rality of longitudinal sections, means for detachably connecting said sections together, heads for the ends of said cylindrical casing formed respectively with feed and discharge openings, track-rings interposed 'between the ends of said cylindrical sections and said heads, and means for detachably connecting and clamping said heads, said track members, and said cylindrical sections together, to form said cylindrical casing.

, 9. A concrete mixer consisting of a cylindrical casing or drum formed of a plurality of longitudinal sections, means for detachably connecting said sections toheads for the ends of said cylindrical casing and discharge openings, track-rings supporting said drum and having a portion thereof serving as a reinforcement and cover for the joints between the side edges ofthe longitudinal sections and a reduced portion of said rings, bolts detachably connecting said heads and tracks, and tie bolts passing from head to head through the track-rings and clamping all the parts together.

10. compact portable knock-down concrete mixer consisting of a cylindrical casing separable longitudinally into two sections, removable ends adapted to form with the said sections the sides and bottom of s an inclosure, a vtrack-ring adapted to surround said ends and bind together the casing parts, tie-bolts, adapted to pass through the ends and to fasten the whole'tog'ether, and driving parts, chutes, and mixing blades, all adapted in length to be contained in the said inclosure whereby a compact portable, selfcontained -knock down con-- crete mixer is produced.

11. A concrete mixer consisting of a cylindrical casing or drum formed of a plurality of longitudinal sections, means for formed respectively with feed v rings.

detachably connecting said sections together, heads for the ends of said cylindrical casing formed respectively with feed and discharge openings, rings connected with said cylindrical sections and said heads and means for detachably connectin and clamping said heads, said rings, an said cylindrical sections together, to form said cylindrical casing, said rings being of greater diameter than said sections and heads and arranged to extend beyond them when they are disconnected and the 'sections placed upon the superposed heads to form a housing whereby. the edges of said heads and sections are protected by the 12. A concrete mixer consisting of a cylindrical casing or drum formed of a plurality of longitudinal sections, heads for the ends of said-cylindrical casing formed respectively with feed and discharge openings, means for detachably connecting said sections and heads together, blades mounted within the sections, a charging hopper, a discharging chute, a support for said chute, rollers adapted to receive said-rings and frames for supporting the said rollers, all having a greatest dimension less than the diameter of said heads and-sections,whereby said heads and sections may be placed together to form a housing inclosing said members.

Witness my hand this 22nd day of May, 1914 at the city of New York, in the county of New York, and Stat of'New York.

ARTHUIL W. RANso-MEi Witnesses MARY H. LEWIS, I S. J. Cox. 

